1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf744e6fd37b409d3051324378b19bd7aae1ae43323b403fd69e2fe365fd5fee. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6e40106b-caaf-487a-9b7c-525d760ee458.json and https://artists.proofprofile.net/proofs/artist/6e40106b-caaf-487a-9b7c-525d760ee458.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2a197582648834a55f11c08a25024c7e19c1b4e33459128d227c7dcbebe1d2. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:48:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUFTB1700171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec486503599f73633353513ac08076a44f5978192d7bd75ca94c6ae95b7449f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:00:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUFTB1700172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6e8542d9052d1988e7c30093c3ab34f1ece23e4a0900a69df25f9f0ae0b92c. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUFTB1700174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa4b960c6b9e225f25e6f6b3ab0517df3813a2b6566ad5471785af8b2c39bd3. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUFTB1700176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b50f6b04a609c84b6f29b41477ebba713409f8467e7163619e5144f155cff0. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUFTB1700179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1eb8009041a730bed645ba8cedb8dd3bed748b8b1c94e5371cb9e88ab1d4ac. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUFTB1700181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d96617ff038e056e254207769ae061eda05d8dd57377f83374b77df74b60895. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUFTB1700182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29aa5230a11c33d18e6c07a0fcb765e88d58b8d338ada62f520ce783c6e71737. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUFTB1700185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a36732cf09e1190a3fecd0044f076f352704debf8cd6f41a995ecda38cef89. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUFTB1700187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969c0633adf508d96d15973cdc569bd56b65686d82e93b656162afb869e6984e. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUFTB1700189.